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This letter reports an integrated ultrawideband impulse radio design. The proposed radio applies a combination of frequency-shift keying and ON–OFF keying to realize intrinsic clock and data recovery as well as asynchronous wireless communication. The transmitter uses frequency-hopping and duty-cycling methods to achieve ultrawide bandwidth. Both of the transmitter and the receiver are fabricated...
This paper addresses simulations and design of an asynchronous integrated ultra wideband impulse radio transmitter and receiver suitable for low-power miniaturized wireless sensors. This paper first presents software simulations for asynchronous transmission over noisy channels using FSK-OOK modulation, which demonstrates that the proposed architecture is capable to communicate reliably at moderate...
Wireless sensor networks consist of a large number sensors spread across a given geographical area. Each sensor has its own communication capability as well as certain level of intelligence for signal processing and networking. As the sensor nodes are densely populated, communication range requirement for these nodes is smaller. After signal detection, a number of sensor nodes communicate over the...
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